# Variables

- [Variable Type: int](/sodium_documentation/language-reference/lexical-elements/variables/variable-type-int.md)
- [Variable Type: char](/sodium_documentation/language-reference/lexical-elements/variables/variable-type-char.md)
- [Variable Type: bool](/sodium_documentation/language-reference/lexical-elements/variables/variable-type-bool.md)
- [Local variables](/sodium_documentation/language-reference/lexical-elements/variables/local-variables.md)
- [Page variables](/sodium_documentation/language-reference/lexical-elements/variables/page-variables.md)
- [Session variables](/sodium_documentation/language-reference/lexical-elements/variables/session-variables.md)
- [Predefined Variables](/sodium_documentation/language-reference/lexical-elements/variables/predefined-variables.md)
- [:Session.authenticated](/sodium_documentation/language-reference/lexical-elements/variables/predefined-variables/session.authenticated.md)
- [:Session.user](/sodium_documentation/language-reference/lexical-elements/variables/predefined-variables/session.user.md)
- [:Session.Id](/sodium_documentation/language-reference/lexical-elements/variables/predefined-variables/session.id.md)
- [:Session.user](/sodium_documentation/language-reference/lexical-elements/variables/predefined-variables/session.user-1.md)
- [:Row.Id](/sodium_documentation/language-reference/lexical-elements/variables/predefined-variables/row.id.md)
